.youtube_video {
    margin: 0 auto;
    text-align: center;
    position: relative;
    display: inline-block;
}

.youtube_video::before {
    font-family: "Font Awesome 6 Free";
    content: "\f144";
    font-size: 5em;
    padding: .05em .2em;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 99;
}

.youtube_video:hover::before {
    filter: invert();
}

.youtube_video::after {
    content: "Das Video auf YouTube abspielen.";
    font-size: 0.9em;
    padding: .05em .2em;
    position: absolute;
    left: 50%;
    top: 70%;
    transform: translate(-50%, -50%);
    z-index: 99;
}

.youtube_video:hover::after {
    filter: invert();
    text-decoration: underline;
}

.youtube_video>img {
    object-fit: cover;
}

body>aside:img[src$="Logo.webp"]{
    width: 140px; 
    height: 140px;
}

.alignright{
    float: right;
    margin: 0 0 0 1em;
}

.alignleft {
    float: left;
    margin: 0 1em 0 0;
}